.lt_main{
  .left_first{
    width: 90px;
    height: 100%;
    float: left;
    position: relative;
    li{
      width: 100%;
      height: 100%;
      height: 50px;
      line-height: 50px;
      text-align: center;
      border-right: 1px solid red;
      border-bottom: 1px solid red;
      background-color: pink;
      &.active{
        border-right:  none;
        background-color: #fff;
      }
    }
    // a{
    //   display: block;
    // }
  }
    .right_second{
      overflow: hidden;
      height: 100%;
      position: relative;
      ul{
        padding-top: 10px;
      }
      li{
        float: left;
        width: 33.3% ;
        img{
          width: 62px;
          height: 62px;
          display: block;
          margin: 0 auto;
        }
        p{
          text-align: center;
        }
      }
      }
}